PTP Slave

Network Time Client

The PTP Slave provides a high performance synchronization clock solution (SETS) for use in SDH/SONET back haul applications or as a replacement system, allowing for synchronization over packet switched networks (PSN).  The PTP Slave Network Time Client also provides time distribution using PSN, IRIG B and RS232.  This is done using Precision Time Protocol (PTP) over an Ethernet network.


Key Features

  • Delivers highly economic end-to-end frequency synchronization
  • Frequency accuracy better than 10ppb possible using Giga bit switches
  • Precision timing circuits ensure stability in event of synchronization signal interruption
  • Client system time accuracy better than 1 microsecond using Giga bit switches
  • Configuration and alarm reporting capabilities using Simple Network Management Protocol (SNMP)
  • Time of Day (TOD) is provided for support of legacy equipment using IRIG B and RS232


PTP V2 IEE 1588 packets over Ethernet network

System Benefits

  • Powerful network delay analysis delivers full time alignment over hostile networks (including Layer 2 and Layer 3 routing)
  • Configured or automatic best master clock selection
  • No need for antennas (GPS)
  • E1 ITU G.703 synchronization clock signal is configurable via user menus
  • Unicast operation ideal for use in Telecoms environment


The PTP Slave is available as a board-level product, as a rack-mountable unit or as a stand alone unit.

Module connections

The unit provides two standard RJ45 connections to a 100BASE-T network.  One for configuration and firmware uploads and the other for PTP connection to the master PTP clock.  A 9 way D type socket is also available for RS232 connection for configuration, status and firmware upload purposes (115.2kbaud, 8 bit characters and 1 stop bit).  1PPS and 10MHz outputs are provided via two BNC 50Ω sockets. E1 output via 75Ω BNC socket and RJ45 connection.

Product Specifications
Product Data Sheet

Interface Standards

PTP IEEE 1588 V2-4 G.82617

ITU G.703. G.704, G.706, G.736, G775, G823

Ethernet IEEE802.3


10 MHz sinusoidal - BNC 50Ω socket.  Phase aligned +/- 100ns of 1PPS output.

1 Vrms into a 50Ω load. (Frequency accuracy T.B.A.)

1PPS – BNC 50Ω socket.  2.5Vpp +/- 0.1Vpp into a 50Ω load phase aligned to master +/-100ns (dependent on architecture of LAN ie. Router, hubs, switches used and quality of oscillator specified)

E1 ITU G.703 - synchronization clock signal (AMI and HDB3 encoding – Ethernet connector (RJ45) balanced or BNC 75Ω socket unbalanced.

DC-level shifted Irig B – BNC socket (grounded) 50Ω DC Timecode/Time Pulse output 2.5Vpp +/-0.1Vpp into a 50Ω load.

Serial message RS232 – D type 9 way socket NMEA GPRMC message format.  9600 baud, 1 stop bit and no parity.


DC supply voltage        -48V +/- 12V

PTP packets IEEE 1588 version 2 – Ethernet connector (RJ45) (100Base-T or better LAN)

SNMP – Ethernet connector (RJ45) (10Base-T or better LAN-WAN) to allow a web user interface


210mm W x 125mm D x 40mm H

Weight: TBA

Power: (-36) to (-60)V DC nominal -48V DC

Optional mounting size: 19” rack mount (1U high, 125mm deep)

Optional Stand-Alone unit: Dimensions TBC

Environmental (Operation & Storage)

Temperature: 0°C to 40°C

Humidity: up to 95% RH (non-condensing)

EMC: CE compliant

PTP Slave Datasheet

About Brandywine Communications

Brandywine Communications Inc. offers superior products to the time and frequency marketplace. Our mission is to provide the finest equipment coupled with excellent before and after sale service.

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Contact Us

Brandywine Communications
Ultra-Precision Time & Frequency

1153 Warner Ave
Tustin, CA 92780
Phone: 714.755.1050